swift - Sheet inside ForEach doesn't loop over items SwiftUI

Question

I have an issue using a sheet inside a ForEach. Basically I have a List that shows many items in my array and an image that trigger the sheet. The problem is that when my sheet is presented it only shows the first item of my array which is "Harry Potter" in this case.

Here's the code

struct ContentView: View {
    @State private var showingSheet = false
    
    var movies = ["Harry potter", "Mad Max", "Oblivion", "Memento"]
    var body: some View {
        NavigationView {
            List {
                ForEach(0 ..< movies.count) { movie in
                    HStack {
                        Text(self.movies[movie])
                        Image(systemName: "heart")
                    }
                        .onTapGesture {
                            self.showingSheet = true
                    }
                    .sheet(isPresented: self.$showingSheet) {
                        Text(self.movies[movie])
                    }
                }
            }
        }
    }
}

question from:https://stackoverflow.com/questions/65622801/foreach-loop-trouble-with-sheet

Answer 1

There should be only one sheet, so here is possible approach - use another sheet modifier and activate it by selection

Tested with Xcode 12 / iOS 14 (iOS 13 compatible)

extension Int: Identifiable {
    public var id: Int { self }
}

struct ContentView: View {
    @State private var selectedMovie: Int? = nil

    var movies = ["Harry potter", "Mad Max", "Oblivion", "Memento"]
    var body: some View {
        NavigationView {
            List {
                ForEach(0 ..< movies.count) { movie in
                    HStack {
                        Text(self.movies[movie])
                        Image(systemName: "heart")
                    }
                        .onTapGesture {
                            self.selectedMovie = movie
                    }
                }
            }
            .sheet(item: self.$selectedMovie) {
                Text(self.movies[$0])
            }
        }
    }
}